More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Mathematics ECAT Pre Engineering Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
sin 540° =
Choose an answer
0
1
2
3
Previous
Skip
Next
Question # 2
Choose an answer
Previous
Skip
Next
Question # 3
sin 3a = ______;
Choose an answer
3sin a - 4sin3a
4sin a -3 sin3 a
3 cos3 a -cosa
4cos3 a - 3cos a
Previous
Skip
Next
Question # 4
Choose an answer
Previous
Skip
Next
Question # 5
tan
θ
/2
Choose an answer
Previous
Skip
Next
Question # 6
Choose an answer
Previous
Skip
Next
Question # 7
cos 3a =_______;
Choose an answer
3sin a - 4sin3 a
4sin a - 3sin3 a
3cos3 a - 4cos a
4cos3a - 3cos a
Previous
Skip
Next
Question # 8
cos
4
θ
- sin
4
θ
=
Choose an answer
cos4
θ
cos2
θ
-sin
θ
sin2
θ
Previous
Skip
Next
Question # 9
Choose an answer
Previous
Skip
Next
Question # 10
Choose an answer
Previous
Skip
Next
Question # 11
Choose an answer
Previous
Skip
Next
Question # 12
Choose an answer
Previous
Skip
Next
Question # 13
Choose an answer
Previous
Skip
Next
Question # 14
Choose an answer
Previous
Skip
Next
Question # 15
Choose an answer
Previous
Skip
Next
Question # 16
Choose an answer
Previous
Skip
Next
Question # 17
If ΔABC is right triangle then the law of Cosines reduces to
Choose an answer
The Pythagoras Theorem
The law of Sines
The law of cosines
The law of tangents
Previous
Skip
Next
Question # 18
2cos2 a/2 =______;
Choose an answer
1+sina
1-sina
1+cosa
1-cosa
Previous
Skip
Next
Question # 19
Choose an answer
Previous
Skip
Next
Question # 20
Choose an answer
Previous
Skip
Next
Question # 21
sin 2
α
=
Choose an answer
Previous
Skip
Next
Question # 22
Choose an answer
Previous
Skip
Next
Question # 23
sin (2
π
-
θ
)
Choose an answer
cos
θ
sin
θ
tan
θ
-sin
θ
Previous
Skip
Next
Question # 24
cos 2
α=
Choose an answer
1 - 2 sin
2
α
sin
2
α
+ cos
2
β
sin
2
α
- cos
2
β
None of these
Previous
Skip
Next
Question # 25
Choose an answer
Previous
Skip
Next
Question # 26
Choose an answer
Previous
Skip
Next
Question # 27
Choose an answer
Previous
Skip
Next
Question # 28
Choose an answer
Previous
Skip
Next
Question # 29
Tan(
α
-
β
)=
Choose an answer
Previous
Skip
Next
Question # 30
Choose an answer
Previous
Skip
Next
Question # 31
Cos (
α
+
β
) - cos (
α
-
β
) =
Choose an answer
-2 sin
α
sin
β
2 sin
α
cos
β
-2 sin
α
cos
α
4 sin
α
cos
β
Previous
Skip
Next
Question # 32
If cos
α
= 4/5, then cos
α
/2
Choose an answer
Previous
Skip
Next
Back
